Computer Pointing Devices Degrees Of Freedom Free Encyclopedia Direct Input Keyboards Movements Controller Dimensional Traditional Mice Touch Screen Input Mode Video Input Devices Audio Input Search Control Signals Information Processing System Input And Output Devices Hardware Interface Input Device Computer Science Keyboard Computer Desktop Encyclopedia Technology WordNet Houghton Mifflin Company Unanswered Questions Peripheral Device Joystick Ø Trackball Keys Digital Cameras Light Pen Scanners Ball Tablet PC Computer Keyboards Mouse Buttons Flatbed Scanners